Infrared Waves vs. Radio Waves Frequency

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Discussion Overview

The discussion centers around the frequency comparison between infrared waves and radio waves, exploring the concepts of wavelength and frequency in the context of physics. Participants are examining potential misunderstandings related to these concepts.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant asserts that infrared waves have a greater frequency than radio waves, referencing a physics reference table.
  • Another participant explains that radio waves have a long wavelength, which corresponds to a low frequency, while infrared waves have a shorter wavelength and thus a higher frequency.
  • A third participant reiterates the inverse relationship between wavelength and frequency, suggesting that the confusion may stem from a misunderstanding of these terms.
  • One participant challenges the authority of the teacher, suggesting that it is acceptable to question their correctness regarding the frequency comparison.

Areas of Agreement / Disagreement

Participants express differing views on the frequency of infrared waves compared to radio waves, with some supporting the idea that infrared has a higher frequency and others indicating potential confusion regarding the terms used.

Contextual Notes

There is a lack of clarity regarding whether the confusion arises from frequency or wavelength, as well as the potential for miscommunication between the student and teacher.

jfio93
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compared to the frequency of radio waves the frequency of infared waves is i keep getting this wrong, i look at my physics reference table and it clearly shows that infared waves have a greater frequency . but compared to the frequency of radio waves the frequency of infared waves is less according to my teacher
 
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welcome to pf!

hi jfio93! welcome to pf! :smile:

radio waves have a very long wavelength …

that's why radio telescopes are so large, and don't need to be smooth …

and a long wavelength means a low frequency :wink:

(so infrared is higher frequency than radio waves, but lower than light and Xrays etc)
 
Like Tim said, the frequency and wavelength of waves (which includes light) is inverse. The longer the wavelength, the smaller the frequency.

Radio waves have a very long (or large) wavelength, and thus, a very small frequency. Infared has a shorter (smaller) wavelength, and a higher frequency than radio waves.

Perhaps you or your teacher is thinking of wavelength instead of frequency?

Wavelength is the distance between two like points on a wave, like between peaks or between the valleys, and frequency is the number of cycles the wave does in one second. Like how many peaks pass a point in one second.
 
In reference to what your teacher told you, not the guys above me.

Sometimes teachers are wrong. Remember, there is no arrogance in questioning authority.
 
Last edited:

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